Pipe-coupling.



No. 808,457. PATBNTED DBO. 26, 1905.

H. F. KRAVBR. PIPBGOUPLING.

APPLICATION FILED MAY11.1905.

Z Q/ i JV J3@ f fixieren stradine HARVEY F. KRAVER, OF MEDINA, OHIO.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Applica-tion filed May 11,1905. Serial No. 259,887.

T0 @ZZ 1071/0777, Nifty concern:

Be it known that I, HARVEY F. KRAVER, a citizen of the United States,and a resident of Medina, in the county of Medina and State of Ohio,have made a certain new and useful Invention in Pipe-Couplings; and Ideclare the following to be a full, clear, and exact description of thesame, such as will enable others skilled in the art to which itappertains to make and use the invention, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

Figure l is a central section of a pipe-joint having' my inventionapplied thereto. Fig. 2 is a similar view showing the meeting' faces ofthe members in a plane at an ang'le of fortyfive degrees to the faces ofthe outer ends of' said members.

The invention relates to adjustable pipecouplings; and it consists inthe novel construction and combination of parts, as hereinafter setforth.

In the accompanying drawings the letter a designates one member of thejoint, b the other member, and c the coupling-ring.

The member or branch a of the joint consists of a curved tapering'tubular casting having' at one end a thread c? for connection with asection of pipe. The other end of the member is expanded in circularform and provided with an exterior annular marginal flange e, therebyforming a bearing at f for a gasket g. The exterior of this marginalportion is threaded at /t to connect with the interior thread of thecoupling-ring, which is provided with an internal annular lip m at theopposite end from the thread, as shown.

The member or branch b of the joint consists of a curved tapering'tubular casting which is similar to the member a, except that itscircular expanded end is made without a thread and is provided with anexterior annularflange p and with an interior annular flange fat rightangles to said exterior annular flange, the interval between the twoflanges forming a bearing for the gasket.

Then the parts are assembled, the end of the member is connected to thecoupling'- ring, so that its exterior iiange p engages the internal lipm of said ring. The gasket being placed in position in the annularchannelbearing s, the other member is screwed into position inengagement with the couplingring, which is threaded for this purpose asfar as the smooth bearing portion e between the thread and the lip m.The interior lip 0r flange 2f of the member 7) of the joint protects theinner edge of the gasket or packing g, which is usually piled in severalthicknesses.

Usually the axis of' the opening in the expanded end of each member isat right angles with the axis of the other meeting end, which isthreaded for engagement with a pipe-section, and by various adjustmentsof the parts the joint may be adapted to carry forward or to serve as areturn-joint or to operate at different angles. Each coupling memberislongitudinally curved or arc-shaped and tapering from its expanded baseor meeting face to its outer end, and the plane of the meeting face isat right angles to the axis of the tube at its enlarged or base end.

In Fig. 2 of the drawings the meeting faces of the coupling' members areshown as in a plane at an angle of forty-five degrees with the faces of'the outer ends of said members. In this way the least possibleresistance is offered to the passage ofl the contents of the pipe. rI`hemembers are abutted squarely in a plane at right angles to the axis oftheir bases, and the joint members can be often more easily connected,especially where the ends do not fully meet; Disconnection is alsofacilitated, and the wrench can be used to better advantage in somecramped places.

Having described this invention, what I claim, and desire to secure byLetters Patent, is

l. In an adjustable pipe-coupling', the combination with along'itudinally-curved tapering tubular member having aninternally-expanded seat end provided with an exterior threaded annularfiange, and a longitudinallycurved taperingtubular member having aninternally-expanded seat end provided with an outwartl-directed exteriorannular flange and an interior annular flange at right angles theretoand parallel to the exterior annular iiange of the first-named member,of a coupling-ring having' an internal thread engaging the thread of theexterior annular flange of the first-nau'ied mem ber and having aninwarddirected annular flange engaging the outwarddirected flange of'the last-named member,- substantially as specified.'

2. An adjustable pipe-coupling, having in combination an internallyflanged and threaded coupling-ring, a tubular member having alongitudinal curvature through an arc of fortyfive degrees and anexpanded seat end engaging' said coupling-ring, a gasket, and a tubu-IOO IIO

angle of forty-ve degrees to the faces of the I0 outer ends of saidmembers, substantially as specified.

In testimony whereof l afx my signature in presence of tivo Witnesses.

HARVEY F. KRAVER. Witnesses:

H. F. GABLE, F. O. PHILLIPS.

